Click here to view the manual to this game.As the game begins, the iconic line "Greetings Professor Falken:" appears on the screen, quickly followed by, in a box: "Select a Challenge Level from 1 to 8 for Global Thermonuclear War". After the skill level has been chosen, the main game screen appears.
The continental United States is divided into six sectors, each with its own bases and major cities. ICBMs and bombers rain over the North Pole, while submarines inch toward coasts. Defenses consist of ABMs, interceptor jets, submarines and an experimental particle beam satellite that trumps everything else but weaves in and out of sectors on a fixed orbit. US units are individually far superior, but vulnerable to the destruction of interceptor and missile bases. Events proceed in real time in all sectors as defenses gradually crumble.
Enemy presence and the destruction of bases and cities lower a sector's Defense Condition (DEFCON) status. The DEFCON level for each sector is factored into the total DEFCON status. If it stays at 1 for 60 successive seconds, or if at any time all cities and bases have been destroyed, an automated counterstrike triggers global thermonuclear war and loses the game. The game is won by preventing a counterstrike long enough for a cease-fire to be reached. With eight difficulty levels, one game takes approximately four to eight minutes.
The game is visually stark and technical by 1984 standards. As in the original movie, the manual hints that the attack is an imagined result of a computer glitch; the counterstrike is not.
Click here to view the controller overlay for this game.